Chair-iron



D. R. COLLIER.

CHAIR IRON. APPLICATION FILED MAR. I7, I92I.

1?@,99466 Patented De@ 6, 1921.

2llllllllllilllllllJllll/l lessees. i

UNiTED STAFFS DAVID R. COLLIER, OF GARDNER, MASSACHUSETTS, ASSIG'NOR TO CLLIERf IEYWORTI-I COMPANY, 0F GARDNER, MASSACHUSETTS, A CORPORATEGN 0F MASSACHUSETTS.

CHAIR-IRON.

To all whom it mag/concern.' i

i Be it lrnown that I, Davis R. COLLIER, a citizen of the United States, residing at Gardner,` in the county of 'Worcester and State of Massachusetts, have invented new and useful improvements in Chair-Irons, of

which the following is a specification.

This invention has relation to chair irons of the general type of those illustrated in my application, Serial No. 429,551.11, filed on the 9th day of December, 1920, in which the hub comprises a central tubular member and a plurality of channel bars grouped thercaround to receive the inner ends of the legs. a

The present invention comprises certaln improvements, both in hub construction and in the means for detachably connecting to the hub the plate or member which supports the adjusting screw shown in said application.

On the accompanying drawingfv Figure l represents a perspective view of a hub embodying my invention.

Fig. 2 represents a plan view of a hub with the screw-supporting member or plate in place, the spindle being shown in section.

Fig. 3 represents a vertical section through the hub, and portions of the legs, on the line 3 3 of Fig. 2. i

Fig. 1 represents `a section on the line l-Li of Fig. 3.

Fig. 5 represents a similar section with the parts in position to permit the detachment of the screw-supporting plate.

Fig. 6 represents a section on the line 6-6 of Fig. 3.

The hub comprises a central tube 10, and a plurality of channel bars 1l equally spaced about said tube as shown in Fig. 1. Fach channel bar has the longitudinal upright forwardly-converging webs l2, which webs also converge upwardly, so that the inner ends of the legs 13 may be driven or wedged therein.` The upper ends of the `webs 12 on channel bars have lugs or studs 14.A projecting` therefrom, and the body portions of the channel bars have at the lower ends the depending lugs 15. Fncircling the upper end of the central tube 10, there is an upper plate 16, which may have a dependent flanged rim 17, said plate being held on said tube between a circumferential bead 18 thereon and the peened or outwardly spun end 19. The plate has a plurality of aper- Specicaton of Letters Patent.

an adjusting screw Patented Dec. 6, 1221.

Application filed. March 1'?, 1921. Serial No; l152,696.

tures to receive the studs 14, the ends of which are upset. Thus the upper end of the tube, the webs' 12 of the channel bars and said plat-e are all secured rigidly together. The lower end of the tube and the channel bars are secured together by a tapering collar 20 having an inturned flange 21. The collar is forced upon the end of said tube and on the lugs 15, and wedges or crowds the lower ends of the channel bars toward and against the central tube, the lower end of which projects `a short distance below orbeyond said lugs. Thus the lugs and the collar have a wedging relation. rllhe end of the tube is peened or spun outwardly as at 22 to overlalp the collar and hold it rigidly in place. After the chair legs are introduced into the channel irons, a bottom plate 23, `having radiating arms 24C and a central aperture 25 just adequate to receive the collar 20, is slipped on the collar, and is secured to the legs by wood screws 26 passed `through holes in said radiating arms. The

legs are likewise secured to the by screws 27.

The means, by which the spindle 28 supports the head (not shown) is not illustrated, except the dished plate 29 which has an aperture 30 to afford `a step bearing for (not shown), such as illustrated and described in my application hereinbefore mentioned. Said plate 29 is fixed rigidly upon a short sleeve 31, on which there is also a collar 32 and a locking disk or member 33. The plate, the collar and the disk are all rigidly held upon the sleeve between the bead 34.- thereon and the outwardly-spun or peened end of said sleeve. The disk 33 serves as one of two interlocking members by which the plate is locked to the hub, the other interlocking member being indicated at 35. Said last-mentioned member consists of a curved strip having at its upper edge an inturned flange 36 to take over the edge of the disk 33, and having lugs or ears 37 through which rivets 38 are passed into the top plate 16 of the hub. The dslr 33 is recessed or notched at 39, so that, when the two members 35 and 33 occupy the relative positions shown in Fig. 5, the spintop plate 16 -dle 26 and the adjustment screw-supporting instance, the

plate and the hub are interlocked.v Y

What I claim is 1 A chair iron hub comprising a central tubular member, a plurality of channel irons Curing them to saidniernber, lsaidv lugs and said eollarbelng formedto provide a Wedging aetion to torce said channel irons toward said tubular member.

3. A chair iron-hubY comprising a central tubular member, `a plurality oi' channel irons disposed about said member and having projecting lugs at one end, aoollaron said tu:

bular member engaging said lugs and securing them to said member, and a leg-securing plate encircling saidL collar and removable therefrom.

4;. AY chair iron hub comprising a central tubular member, a plurality of channel irons disposed about said member and having projeeting lugs at one end, and a collar on said tubular member engaging said lugs and securing them to said member, said collar being tapering and having an inturned lange at its smaller end.

5. A chair iron comprising a liub having atop plate, a spindle journaled in said hub and slidable axially therein, a plate rotatable about the axis ot said spindle and resting on said hub, a notched disk secured to said plate, and a member on said hub adapted to register with the notch in said disk and to overla n the unnotehed portion of said disk and thereby loelr said plate and said hub together Without interfering with their relative rotative movement.

In testimony whereof I have aiixed my signature.

DAVID R. COLLIER. 

